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If costheta-sintheta=1/5, where 0 lt the...

If `costheta-sintheta=1/5,` where 0 lt `theta lt pi/4, then` Column I Column II `(costheta+ sintheta)//2` p. `4/5` `sin2theta` q. `7/(10)` `cos2theta` r. `(24)/(25)` `costheta` s. `7/(25)`

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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
  1. If tantheta=-4/3,then sintheta is

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  2. Let ABC be a triangle with /A=45^0dot Let P be a point on side BC with...

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  3. If costheta-sintheta=1/5, where 0 lt theta lt pi/4, then Column I Colu...

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  4. One of the general solutions of sqrt(3) cos theta-3 sin theta=4 sin 2 ...

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  5. Let theta in ( 0, pi/4) and t1 = (tan theta)^(tan theta),t2 = (tan th...

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  6. Sum of roots of the equation x^4-2x^2sin^2(pix/2)+1=0 is 0 (b) 2 ...

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  7. Let n be a positive integer such that sinpi/(2n)+cospi/(2n)=(sqrt(n))/...

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  8. Let O be the circumcenter, H be the orthocentre, I be the incenter, an...

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  9. sec^2theta=4xy/(x+y)^2 is true if and only if

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  10. Prove that in a A B C ,sin^2A+sin^2B+sin^2C<=9/4dot

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  11. The number of solution of the pair of equations 2sin^2theta-cos2theta=...

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  12. The rational number which equals the number 2. 357 with recurring de...

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  13. It (cos^4A)/(cos^2B)+(sin^4A)/(sin^2B)=1 then show that (cos^4B)/(cos^...

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  14. Prove that r1+r2+r3-r=4R

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  15. Number of solution of equation 2sinx/2cos^2x-2sinx/2sin^2x=cos^2x-sin^...

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  16. If cot(theta-alpha),3cottheta,"cot"(theta+alpha) are in A.P. and theta...

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  17. If x=sectheta-tantheta and y=cos e ctheta+cottheta, then prove that x ...

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  18. If A >0,B >0 and A+B=pi/3, the maximum value of tanAtanB is

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  19. prove that cosA +cosB+cosC=1+r/R.

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  20. denote the positive solution of the equation 3+3costheta=2sin^2thetado...

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